Which expression is equivalent to 14x + 35 - 21y

Expression 1: 2x + 5 - 3y
Expression 2: 7(2x + 5 - 3y)
Expression 3: 7xy(2 + 5 - 3)
Expression 4: 7x(2+5+3y)

Look at this expression. a3b3c a-3b-3c-1 which of the following is the simplest form of the expression above?

How many sides does a regular polygon have if each exterior angle measures 72a.3b.4c.5d.6

Which is the correct excel formula for the 80th percentile of a distribution that is n(475, 33)? =norm.dist(80,475,33,1) =norm.inv(0.80,475,33) =norm.s.inv((80-475)/33)?